Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Lianjie Du, M.D.
Psychiatry Physician in Orange, CA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255331385
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Lianjie Du
Credential M.D.
Sex Male
Practice address 1100 W Stewart Dr, Orange, CA, 92868
Phone (714) 564-9659
Enumeration date Jul 29, 2005
Last updated in NPPES Nov 29, 2011
Taxonomy & licenses
2084P0802X Addiction Psychiatry Physician Allopathic & Osteopathic Physicians · License A84426 (CA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00A844260 | Medicaid | CA | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1255331385 active?
Yes, as of the latest NPPES snapshot, NPI 1255331385 is active (record last updated 2011-11-29).
How do I verify Lianjie Du's NPI record?
Cross-check NPI 1255331385 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all → Jack Lianjie Du, M.D., A Medical Corporation Psychiatry Physician · Orange, CA NPI 1720080294 St Joseph Hospital of Orange End-Stage Renal Disease (ESRD) Treatment Clinic/Center · Orange, CA NPI 1609850320 St Joseph Hospital of Orange General Acute Care Hospital · Orange, CA NPI 1912982216 St Joseph Hospital of Orange Psychiatric Hospital Unit · Orange, CA NPI 1285619254 Jonathan Cohen Anesthesiology Physician · Orange, CA NPI 1184691867 Norichika Okada Anesthesiology Physician · Orange, CA NPI 1568421832 Matthew Mullarky Emergency Medical Services (Emergency Medicine) Physician · Orange, CA NPI 1639124811 Yasir Qazi Nephrology Physician · Orange, CA NPI 1326086695
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-29.